This one is probably only useful to massive geeks (hi!) but I’m telling you about it anyway just in case you find it useful.
The European Audiovisual Observatory maintains a database of legal developments in all key areas, all key players all legal developments since 1995, covering 41 countries and international institutions.
IRIS Merlin contains over 9000 short descriptive articles based solely on facts with 8628 (and counting) references (laws, decrees, court cases, etc.) and it is searchable by keywords, date, country, and topic.
(Thanks to Carole Tongue for the tip!)